Vent for nursing-nipples.



P. WISOTZKY.

VENT FOR NURSING NIPPLES.

APPLICATION TILED JULY 24, 1912.

1,066,873, Patented July 8,1913.

NAM/5555 W/f/WZZ Z PHILIP]? WISOTZKY, OF FRANKFORT-ON-THE-MAIN, GERMANY.

VENT FOR NURSINGNIPPLES.

Specification of Letters Patent.

Patented July 8, 1913.

Application filed July 24, 1912. Serial No. 711,291.

To all whom it may concern:

Be it known that I, Pnimrr \Visormtr, a subject of the Emperor of Germany, and a resident of l ranktort-on-theMain. in the Empire of Germany, have invented certain new and useful Improvements in Vents 't'or Nursing-Nipples, of which the following is a specification.

My invention relates to mouthpieces of sucking bottles and has for its object to provide such mouthpieces with an automatic valve for the entrance of air it a vacuum occurs in the bottle.

lVith such object in view my invention consists in an air inlet valve having but two parts removably connected to each othe and exehangeably secured in a hole of the ail of the mouthpiece, so that the valve as easily may be removed as dismounted for cleaning the mouthpiece and the parts of the valve.

In the accompanying drawing;--Figure '1 is a plan view of the cup shaped ring of the valve, .Fig. 2 is a cross section according to the line D-E of the Fig. 1, Fig. 3 shows the diaphragm of the valve, partly in front elevation and partly in cross section. Fig. 4 shows the valve, partly in front elevation and partly in cross section. Fig. 5 is a cross section of the valve, showing the diaphragm in two different positions. Fig. 6 is an elevation in a smaller scale of the mouthpiece with parts broken away, showing the valve in place.

My new valve for mouthpieces of sucking bottles consists of a cup shaped ring 1, preferably made of aluminiui'n, and a diaphragm 2 of rubber or the like material. The ring 1 is provided with an outer rim 2-3 bent back, and with an inner flanged rim 4-. The said flanged rim serves for connecting the valve with the mouthpiece, as is represented in Figs. 5 and 6. The outer rim 3 is provided with two cut oil' portions or openings arranged diametrically opposite one another and serving for the entrance of the air hereinafter will be described. The rim 6 of the diaphragm 2 is bent up to fit the rim 3, when the diaphragm is stretched over the ring 1, as shown in Figs. 4: and For connecting the valve with the mouthpiece 7 a hole 8 is arranged on a suitable place in the wall of the same.

in using my invention I insert the valve with its flanged rim 4 into the hole 8 oi. the mouthpiece 7, after having stretched the dia phragm 2 over the ring 1. Til the normal position the cut oil portions or openings 5 are held closed by the diaphragm 2 preventing in such a way the passage through the said openings In case a vacuum occurs in the bottle being connected with the mouthpiece 7, the atmospheric pressure will act upon the diaphragm in the direction of the arrow 15 (Fig. 5) and in expanding the diaphragm the openings 5 will be trend to give passage totheair which now will enter into the bottle until the vacuum is compensated. it, on the other hand, a pressure, for in stance the weight oi. the milk filled into the bottle, should act upon the other side of the diaphragm 2, that means in the direction of the arrow F (Fig. the diaphragm in expanding will firmly close the openings 5 preventing the milk from flowing out through the same.

lVhat I claim is:

1. Vents for musing nipples comprising a slotted ring and an elastic diaphragm sc cured to said ring, substantially as described.

2. Vents for nursing nipples comprising a ring, cut off portions arranged in said ring, and a diaphragm stretched over the. ring and normally closing the said cut oil portions, substantially as described.

3. Vents for nursing nipples comprising a flanged ring, cut oil portions arranged in the outer rim oi the ring, and a diaphragm removably secured to said outer rim of the ring, suhstantiall as described.

In testimony whereof l aliix my signature in presence of two witnesses.

JEAN (hump, Cam. (in UNI).

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of I'atents. Washington, D. C. 

